Membrane and Sensor with Membrane

Abstract

A membrane, especially for application in a sensor, which membrane includes a biocidal effect. The membrane comprises one or more components of the group consisting of: silver nano particles encapsulated in amphiphilic, core, shell structures, antimicrobial silanes, polymers with an antimicrobial end group, polyquads with modified end groups, and biocidally acting block copolymers. The membrane is resistant against aggressive agents, for example, corrosive or oxidizing cleaning agents, in the case of sterilizing, in the case of autoclaving, in the case of thermal loading and/or in the case of mechanical loading.

1 - 14 . (canceled) 
     
     
         15 . A membrane, especially a membrane for application in a sensor, which membrane includes a biocidal effect, and comprises:
 one or more components of the group consisting of: silver nano particles encapsulated in amphiphilic, core, shell structures, antimicrobial silanes, polymers with an antimicrobial end group, polyquads with modified end groups, and biocidally acting block copolymers.   
     
     
         16 . The membrane as claimed in  claim 15 , wherein:
 the membrane is resistant against aggressive agents, for example, corrosive or oxidizing cleaning agents, in case of sterilizing, in case of autoclaving, in case of thermal loading and/or in case of mechanical loading.   
     
     
         17 . The membrane as claimed in  claim 15 , wherein the membrane further comprises:
 a basic material, especially a thermoplastic or an elastomer, to which said one or more components is or are covalently bonded.   
     
     
         18 . The membrane as claimed in  claim 15 , wherein the membrane further comprises:
 a basic material, especially a thermoplastic or an elastomer, in or on which said one or more components is or are associated via core, shell structures.   
     
     
         19 . The membrane as claimed in  claim 18 , wherein:
 said core, shell structures comprise polyamino acids, for example, polylysine, or their derivatives, or functional groups suitable for complex formation, such as, for example, thiol groups or amine groups.   
     
     
         20 . The membrane as claimed in  claim 15 , wherein:
 said amphiphilic, core, shell structures comprise one or more components of the group consisting of: amphiphilic polylysine derivatives, polyethyleneimine derivatives, polyglycerine derivatives, amphiphilic block copolymers, star polymers and comb polymers.   
     
     
         21 . The membrane as claimed in  claim 15 , wherein:
 said antimicrobial silanes include dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (DOTPAC).   
     
     
         22 . The membrane as claimed in  claim 15 , wherein:
 the polymers with an antimicrobial end group comprise at least one polymer of the group consisting of: polyethelene glycol, polyoxazolines, polydimethyl siloxanes; and   quarternary ammonium compounds, phosphonium groups or sulfonium groups can comprise the antimicrobial end group.   
     
     
         23 . An electrochemical sensor for determining concentration of an analyte, especially a gas in a gaseous or liquid, measured medium, wherein said electrochemical sensor has at least one electrolyte chamber separated from the measured medium by a membrane comprising:
 one or more components of the group consisting of: silver nano particles encapsulated in amphiphilic, core, shell structures, antimicrobial silanes, polymers with an antimicrobial end group, polyquads with modified end groups, and biocidally acting block copolymers, especially a membrane serving as a diffusion barrier.   
     
     
         24 . The electrochemical sensor as claimed in  claim 23 , wherein:
 said electrochemical sensor is suitable for determining gaseous or highly volatile components, such as, for example, CO 2 , O2, NH 3 , H 2 S, CO, HCl, HF, HBr, HI, NO, NO 2 , NOx, H 2 , SO 2 , SO 3 , CH 4 , H 2 , Cl 2 , ClO 2 , HClO, O 3 , N 2 O.   
     
     
         25 . A method for the manufacture of a membrane comprising:
 one or more components of the group consisting of: silver nano particles encapsulated in amphiphilic, core, shell structures, antimicrobial silanes, polymers with an antimicrobial end group, polyquads with modified end groups, and biocidally acting block copolymers, the method comprising the step of:   forming the membrane from a basic material, for example, a single component or multicomponent silicone, epoxide resin, polyurethane, polyester, polysulfone, polystyrene, polyacrylate, or a carbon fiber composite material, and one or more components of the group consisting of: silver nano particles encapsulated in amphiphilic, core, shell structures, antimicrobial silanes, polymers with an antimicrobial end group, polyquads with modified end groups, and biocidally acting block copolymers.   
     
     
         26 . The method as claimed in  claim 25 , wherein:
 said one or more components is or are covalently bonded to the basic material or is or are connected via a core, shell structure with the basic material.   
     
     
         27 . The method as claimed in  claim 25 , wherein:
 said membrane is formed by means of cold or hot lamination, screen printing, casting, extruding, film drawing, spraying, impregnating or rolling.   
     
     
         28 . The method as claimed in  claim 25 , wherein:
 the connection of said one or more components with the basic material is performed in a solvent, especially toluene, cyclohexane, isopropanol, ethanol, diethyl ketone, dioxane, xylol, acetic acid ethyl ester or water, or is performed without a solvent.